1. I'm not good at English, so I can't become a tour guide. ( if )
=>If I good at E, I can become a tour guide
2. Mary said she would hold an event about skin care the following month. ( will )
=>Mary will hold an event about skin care next month
3. He gave her the book " The fault in our stars" as a birthday gift. ( she )
=>She had received the book ''" The fault in our stars" as a birthday gift''
4.'' If I were you, I would no longer spend most of my time chatting on fb'' he said ( advised)
=>He advised me not to spend most of my time chatting on Facebook
5. When did you start searching for some one fact in the pass? ( How)
=>How long have you searched for some facts in the past?
6.My mother no longer cooked for me since I married my wife ( used)
=>My mother used to for me when I married my wife